2021 DD1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4271373000
Semi-major axis (a)1.6660341000 AU
Inclination (i)9.47532000°
Long. of Asc. Node (Ω)331.40477000°
Arg. of Perihelion (ω)212.73224000°
Mean Anomaly (M)62.82394000°
Mean Motion (n)0.4583299700°/day
Perihelion dist (q)0.95440880 AU
Aphelion dist (Q)2.37765940 AU
Orbital Period2.15043260 yr
Physical Parameters
H (abs. magnitude)27.65
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.960″
Uncertainty6
Orbit TypeApollo
MOID0.008974 AU
Observations Used31
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-02-21
Observations (32)
Date Type RA Dec Mag Band Observatory
2021-02-18 08:46:08 C 10 21 48.25 +27 37 40.5 V G96
2021-02-18 08:53:34 C 10 21 51.92 +27 35 15.4 V G96
2021-02-18 09:01:00 C 10 21 55.59 +27 32 47.5 V G96
2021-02-18 11:02:26 C 10 22 58.44 +26 51 34.5 V I52
2021-02-18 11:04:04 C 10 22 59.31 +26 51 00.5 V I52
2021-02-18 11:05:42 C 10 23 00.22 +26 50 27.3 V I52
2021-02-18 11:07:20 C 10 23 01.12 +26 49 52.5 V I52
2021-02-18 22:07:41 C 10 31 03.33 +22 36 33.0 V J95
2021-02-18 22:11:55 C 10 31 06.04 +22 34 45.2 V J95
2021-02-18 22:16:41 C 10 31 09.20 +22 32 45.5 V J95
2021-02-18 22:27:03 C 10 31 16.02 +22 28 22.4 V J95
2021-02-18 23:30:28 C 10 31 56.48 +22 00 56.4 V Z99
2021-02-18 23:33:34 C 10 31 58.52 +21 59 35.1 V Z99
2021-02-18 23:36:44 C 10 32 00.64 +21 58 12.3 V Z99
2021-02-19 03:00:06 C 10 34 52.90 +20 26 53.6 u H21
2021-02-19 03:03:02 C 10 34 54.99 +20 25 32.2 u H21
2021-02-19 03:06:04 C 10 34 57.13 +20 24 07.5 u H21
2021-02-19 05:09:00 C 10 36 31.82 +19 25 53.9 q 858
2021-02-19 05:13:42 C 10 36 35.16 +19 23 36.6 q 858
2021-02-19 05:18:24 C 10 36 38.45 +19 21 19.7 q 858
2021-02-19 22:04:17 C 10 51 58.56 +09 26 16.5 V L34
2021-02-19 22:22:04 C 10 52 14.79 +09 13 49.0 V L34
2021-02-20 06:51:58 C 11 01 47.22 +02 44 08.7 V I52
2021-02-20 06:52:39 C 11 01 48.01 +02 43 34.2 V I52
2021-02-20 06:53:20 C 11 01 48.66 +02 43 01.2 V I52
2021-02-20 13:38:38 C 11 10 09.42 -02 58 30.5 V 474
2021-02-20 13:39:52 C 11 10 10.88 -02 59 38.7 V 474
2021-02-20 13:40:28 C 11 10 11.61 -03 00 12.8 V 474
2021-02-20 13:41:42 C 11 10 13.08 -03 01 20.8 V 474
2021-02-21 08:50:46 C 11 40 49.15 -23 04 15.5 V I52
2021-02-21 08:52:10 C 11 40 51.39 -23 05 47.0 V I52
2021-02-21 08:52:52 C 11 40 52.57 -23 06 32.8 V I52